Yeah yeah, I know this is an 'old' thread.. sorry.
I, too, am looking for a passenger back rest.
My first thought was a Givi top case with their backrest pad. Double duty as luggage and a back rest.
However I was chatting with customer support at one of the online retailers, and they didn't recommend it.. They said that since there are only 3 (plastic) mounting points for the top case, it's not safe for a passenger to rely on that as a backrest. Maybe they just didn't want to be liable for safety issues. (Then why does Givi sell a backrest pad for their top case?!?!)
In any case, what are your thoughts on using a top case as the passenger backrest? I know it's not 'ideal'.. Ideal would be mounting a Lay-Z-Boy for the passenger (j/k)
Like most people, I just want a passenger backrest so they feel a little more secure, during acceleration, and something to lean back on a bit if we're on a longer ride.
Thoughts?
(I checked out the "Sargent" backrest... my gosh, that little thing is $350 !!! I can get a full Givi top case set up for only a bit more than that much!